There are 14 words that start with 'leac'.
| leach | leachy | 
| leached | leacher | 
| leaches | leachate | 
| leachers | leachier | 
| leaching | leachable | 
| leachates | leachiest | 
| leachability | leachabilities | 
Note: These 14 words that start with 'leac' are found from the USA & Canada version of the tournament Scrabble word list.